Ayala, 35, returned to baseball in 2011 after not pitching in the Major Leagues in 2010. Since his comeback, he's reinvented himself, compiling a 2.50 ERA, 6.2 K/0 and 2.3 BB/9 in 133 innings of work. While he's not a left-handed reliever, Ayala gives Braves' manager Fredi Gonzalez another late-inning option with Jonny Venters currently on the shelf.

The 24-year-old Jones has a 3.58 ERA, 8.3 K/9 and 3.3 BB/9 in 356 2/3 minor league innings. He's yet to pitch higher than the Double-A level, where he's maintained his solid strikeout numbers but owns a 4.11 ERA. He will report to Double-A Bowie for the Orioles.